Basic fact of life here; reloading manuals stay the same once they're printed, frozen in time the date they leave the printer. Bullet lines change and evolve constantly, sometimes obviously and others strictly behind the scenes. In this case, it sounds as though Nosler added the cannelure to this bullet sometime after that manual was done. Basic fact #2, reloading manuals are out of date the first day the manufacturer sends out the first printing of their newest manual. Trust me on this, been there several times. Lag time between final proof readings, print layout and the dozens of other things that go into producing a manual just make this a fact of life. Not a big deal, but something to be aware of.

Thanks for this explanation. Being fairly new to reloading I don't like to make assumptions. When info contradicts or doesn't make sense my first instinct is that it's due to a lack of understanding on my part.